ASTROSAT CZTI

Data Quality Report

Orbit 42781

Creation date: 2024-06-27T22:44:09.961610
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A05_013T01_9000005822_42781cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42781cztM0_level2_quad_clean.evt
Size (bytes)280,128,96086,817,600
Size267.2 MB 82.8 MB
Events in quadrant A2,816,299584,886
Events in quadrant B2,339,475594,464
Events in quadrant C2,468,287568,993
Events in quadrant D2,350,325525,483

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112042
B0103062
C0103612
D0106782

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0380
C0380
D0380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5063180.355520%
B506360.118507%
C5063100.197511%
D5063240.474027%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7036 5064 7 7 0.10% 0.14%
B 7036 5064 1 1 0.01% 0.02%
C 7036 5064 6 6 0.09% 0.12%
D 7036 5064 19 19 0.27% 0.38%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 544352 4599.58 573 560 118.2
A 9 254 35915 299.05 573 560 118.2
A 13 254 7575 59.34 573 560 118.2
B 3 112 30958 275.97 566 551 110.2
B 0 245 27703 246.43 566 551 110.2
B 5 172 20753 183.35 566 551 110.2
C 15 214 205497 1564.93 560 563 131.0
C 14 254 69010 522.68 560 563 131.0
C 15 208 6918 48.53 560 563 131.0
D 5 171 56400 406.37 558 541 137.5
D 12 233 47246 339.77 558 541 137.5
D 2 249 38629 277.09 558 541 137.5

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter